/* Renault-inspired editorial system for the Drone Swarm Research Platform */

:root {
  --yellow: #ffed00;
  --yellow-pressed: #e6d200;
  --black: #000000;
  --deep: #111111;
  --body: #222222;
  --charcoal: #333333;
  --muted: #666666;
  --ash: #8a8a8a;
  --soft: #f7f7f7;
  --hairline: #f2f2f2;
  --white: #ffffff;

  /* Compatibility aliases used by existing inline SVG attributes. */
  --bg-base: var(--white);
  --bg-soft: var(--soft);
  --bg-card: var(--white);
  --border: var(--black);
  --border-h: var(--black);
  --text: var(--black);
  --text-muted: var(--muted);
  --blue: var(--yellow);
  --cyan: var(--yellow);
  --green: var(--yellow);
  --amber: var(--yellow);
  --red: var(--yellow);
  --indigo: var(--yellow);
  --nav-h: 64px;
  --radius: 0;
  --transition: 300ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  font-size: 16px;
}

body {
  min-width: 320px;
  overflow-x: hidden;
  background: var(--white);
  color: var(--black);
  font-family: "Manrope", Arial, sans-serif;
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  top: var(--nav-h);
  left: 0;
  z-index: 90;
  width: 100%;
  height: 3px;
  background: var(--yellow);
  pointer-events: none;
}

::selection {
  background: var(--yellow);
  color: var(--black);
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

a:hover {
  text-decoration: underline;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button,
input,
textarea,
select {
  font: inherit;
}

ul {
  list-style: none;
}

.container,
.nav-inner {
  width: min(100%, 1440px);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 64px);
}

section {
  position: relative;
  z-index: 1;
  padding-block: clamp(72px, 8vw, 120px);
}

section[id] {
  scroll-margin-top: var(--nav-h);
}

.text-center {
  text-align: left;
}

.sec-label {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 20px;
  padding: 5px 12px;
  border: 1px solid var(--black);
  border-radius: 46px;
  background: var(--white);
  color: var(--black);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.sec-title {
  max-width: 960px;
  margin-bottom: 20px;
  color: inherit;
  font-size: clamp(2.6rem, 6.25vw, 5.6rem);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 0.92;
}

.sec-sub {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.3vw, 1.18rem);
  line-height: 1.55;
}

.text-center .sec-sub {
  margin: 0;
}

.sec-divider {
  position: relative;
  width: 100%;
  height: 1px;
  margin: 44px 0 40px;
  overflow: visible;
  border: 0;
  background: var(--black);
}

.sec-divider::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: clamp(72px, 12vw, 180px);
  height: 5px;
  background: var(--yellow);
}

.sec-divider.left {
  margin-left: 0;
}

.card {
  position: relative;
  padding: clamp(24px, 3vw, 36px);
  overflow: hidden;
  border: 1px solid var(--black);
  border-radius: 0;
  background: var(--white);
  color: var(--black);
  box-shadow: none;
  backdrop-filter: none;
  transition:
    background-color var(--transition),
    color var(--transition),
    transform var(--transition);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 5px;
  background: var(--yellow);
  transition: width 350ms ease;
}

.card:hover {
  border-color: var(--black);
  background: var(--black);
  color: var(--white);
  box-shadow: none;
  transform: translateY(-4px);
}

.card:hover::before {
  width: 100%;
}

.card:hover p,
.card:hover a,
.card:hover li,
.card:hover .e-number {
  color: rgba(255, 255, 255, 0.72);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 500ms ease calc(var(--i, 0) * 65ms),
    transform 500ms ease calc(var(--i, 0) * 65ms);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.grad-text {
  background: none;
  color: inherit;
  -webkit-background-clip: initial;
  -webkit-text-fill-color: currentColor;
  background-clip: initial;
}

/* Navigation */

#navbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--nav-h);
  border-bottom: 1px solid var(--hairline);
  background: var(--white);
  color: var(--black);
  box-shadow: none;
  backdrop-filter: none;
}

#navbar.scrolled {
  box-shadow: none;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--black);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-brand:hover {
  color: var(--black);
  text-decoration: none;
}

.nav-brand svg {
  width: 28px;
  height: 28px;
  color: var(--black);
  stroke: currentColor;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 2px;
  margin-left: auto;
}

.nav-links a {
  position: relative;
  display: block;
  padding: 22px 8px 18px;
  border-radius: 0;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
}

.nav-links a::after {
  content: "";
  position: absolute;
  right: 8px;
  bottom: 11px;
  left: 8px;
  height: 2px;
  background: var(--yellow);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  background: transparent;
  color: var(--black);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

#hamburger {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  cursor: pointer;
  border: 1px solid var(--black);
  border-radius: 2px;
  background: var(--white);
}

#hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 0;
  background: var(--black);
  transition: transform var(--transition), opacity var(--transition);
}

#hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

#hamburger.open span:nth-child(2) {
  opacity: 0;
}

#hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */

#home {
  min-height: 100svh;
  padding-top: calc(var(--nav-h) + clamp(54px, 8vw, 110px));
  padding-bottom: clamp(64px, 8vw, 104px);
  overflow: hidden;
  background: var(--black);
  color: var(--white);
  text-align: left;
}

#home::before {
  content: "01";
  position: absolute;
  right: -0.02em;
  bottom: -0.12em;
  color: rgba(255, 255, 255, 0.06);
  font-size: clamp(13rem, 30vw, 32rem);
  font-weight: 700;
  letter-spacing: -0.12em;
  line-height: 0.7;
  pointer-events: none;
}

#home .container {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, 0.88fr);
  grid-template-rows: auto auto auto auto auto;
  column-gap: clamp(40px, 7vw, 110px);
  align-items: center;
}

.hero-eyebrow {
  grid-column: 1;
  grid-row: 1;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  margin-bottom: clamp(36px, 6vw, 82px);
  opacity: 0;
  animation: heroReveal 700ms ease 100ms both;
}

.hero-eyebrow span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-eyebrow .dot {
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--yellow);
}

.hero-h1 {
  grid-column: 1;
  grid-row: 2;
  margin: 0 0 26px;
  color: var(--white);
  font-size: clamp(3.7rem, 7.3vw, 7.5rem);
  font-weight: 700;
  letter-spacing: -0.075em;
  line-height: 0.84;
  opacity: 0;
  animation: heroReveal 700ms ease 180ms both;
}

.hero-h1 .grad-text {
  color: var(--yellow);
}

.hero-sub {
  grid-column: 1;
  grid-row: 3;
  max-width: 580px;
  margin: 0 0 38px;
  color: rgba(255, 255, 255, 0.72);
  font-size: clamp(1rem, 1.45vw, 1.25rem);
  line-height: 1.5;
  opacity: 0;
  animation: heroReveal 700ms ease 260ms both;
}

.hero-ring-wrap {
  position: relative;
  grid-column: 2;
  grid-row: 1 / 5;
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(100%, 520px);
  aspect-ratio: 1;
  margin: 0;
  overflow: hidden;
  background: var(--yellow);
  color: var(--black);
  opacity: 0;
  animation: heroReveal 700ms ease 200ms both;
}

.hero-ring-wrap::after {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(0, 0, 0, 0.45);
  pointer-events: none;
}

.ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.ring-outer {
  width: 82%;
  height: 82%;
  border: 2px solid var(--black);
  animation: ringSpin 24s linear infinite;
}

.ring-mid {
  width: 60%;
  height: 60%;
  border: 1px dashed var(--black);
  animation: ringSpin 18s linear infinite reverse;
}

.ring-inner {
  width: 36%;
  height: 36%;
  border: 1px solid var(--black);
  animation: ringSpin 12s linear infinite;
}

.ring-dot {
  --orbit: clamp(120px, 13.5vw, 205px);
  position: absolute;
  top: 50%;
  left: 50%;
  width: 9px;
  height: 9px;
  border: 2px solid var(--black);
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: none;
  transform-origin: 0 0;
  animation: flightOrbit 14s linear infinite;
}

.ring-dot:nth-child(4) { animation-delay: 0s; }
.ring-dot:nth-child(5) { animation-delay: -3.5s; }
.ring-dot:nth-child(6) { animation-delay: -7s; }
.ring-dot:nth-child(7) { animation-delay: -10.5s; }

.hero-drone-svg {
  position: relative;
  z-index: 2;
  width: clamp(84px, 9vw, 132px);
  height: auto;
  color: var(--black);
  stroke: currentColor;
  filter: none;
}

.hero-stats {
  position: relative;
  grid-column: 1 / -1;
  grid-row: 5;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: 100%;
  margin-top: clamp(60px, 8vw, 104px);
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-top: 5px solid var(--yellow);
  border-radius: 0;
  background: var(--black);
  opacity: 0;
  backdrop-filter: none;
  animation: heroReveal 700ms ease 420ms both;
}

.stat-item {
  min-width: 0;
  padding: 24px clamp(16px, 2.3vw, 34px);
  text-align: left;
}

.stat-item + .stat-item {
  border-left: 1px solid rgba(255, 255, 255, 0.28);
}

.stat-val {
  margin-bottom: 6px;
  color: var(--white);
  font-size: clamp(1.1rem, 1.65vw, 1.45rem);
  font-weight: 700;
  line-height: 1;
}

.stat-lbl {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-ctas {
  grid-column: 1;
  grid-row: 4;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 12px;
  opacity: 0;
  animation: heroReveal 700ms ease 340ms both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 14px 24px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-size: 0.87rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1;
  text-decoration: none;
  transition:
    background-color var(--transition),
    color var(--transition),
    transform var(--transition);
}

.btn:hover {
  box-shadow: none;
  transform: translateY(-2px);
  text-decoration: none;
}

.btn-primary {
  border-color: var(--yellow);
  background: var(--yellow);
  color: var(--black);
  box-shadow: none;
}

.btn-primary:hover {
  border-color: var(--yellow-pressed);
  background: var(--yellow-pressed);
  color: var(--black);
  box-shadow: none;
}

.btn-ghost {
  border-color: var(--white);
  background: var(--black);
  color: var(--white);
}

.btn-ghost:hover {
  border-color: var(--white);
  background: var(--white);
  color: var(--black);
}

/* Problem */

#motivation {
  background: var(--white);
}

.motive-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--black);
  border-left: 1px solid var(--black);
}

.motive-card {
  display: grid;
  grid-template-columns: 56px 1fr;
  align-items: start;
  gap: 24px;
  min-height: 220px;
  border-top: 0;
  border-left: 0;
}

.motive-icon,
.arch-card-icon,
.hw-icon,
.feat-icon,
.sup-avatar,
.sw-card h3 > span {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  border: 1px solid currentColor !important;
  border-radius: 0 !important;
  background: transparent !important;
  color: var(--black);
}

.motive-icon {
  width: 56px;
  height: 56px;
}

.motive-icon svg,
.arch-card-icon svg,
.hw-icon svg,
.feat-icon svg,
.sup-avatar svg,
.sw-card h3 > span svg {
  stroke: currentColor;
}

.motive-card h3,
.arch-card h3,
.sw-card h3,
.team-card h3 {
  margin-bottom: 10px;
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.motive-card p,
.arch-card li,
.sw-card p,
.hw-card p {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* Solution */

#solution {
  overflow: hidden;
  background: var(--black);
  color: var(--white);
}

#solution::after {
  content: "02";
  position: absolute;
  top: 0.04em;
  right: 0;
  color: rgba(255, 255, 255, 0.06);
  font-size: clamp(10rem, 24vw, 24rem);
  font-weight: 700;
  letter-spacing: -0.1em;
  line-height: 1;
  pointer-events: none;
}

#solution .container {
  position: relative;
  z-index: 1;
}

#solution .sec-label {
  border-color: var(--white);
  background: var(--black);
  color: var(--white);
}

#solution .sec-divider {
  background: rgba(255, 255, 255, 0.24);
}

.solution-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(48px, 8vw, 124px);
  align-items: start;
}

.solution-desc p {
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.72);
  font-size: clamp(1rem, 1.25vw, 1.16rem);
  line-height: 1.65;
}

.solution-desc p:first-child {
  color: var(--white);
  font-size: clamp(1.3rem, 2vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.3;
}

.solution-features {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
}

.solution-feat {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
}

.feat-icon {
  width: 40px;
  height: 40px;
  color: var(--yellow);
}

.solution-feat h4 {
  margin-bottom: 5px;
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
}

.solution-feat p {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.84rem;
  line-height: 1.55;
}

/* Architecture */

#architecture {
  background: var(--white);
}

.arch-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid var(--black);
  border-left: 1px solid var(--black);
}

.arch-card {
  display: flex;
  flex-direction: column;
  grid-column: span 2;
  min-height: 330px;
  border-top: 0;
  border-left: 0;
}

.arch-card:nth-child(4),
.arch-card:nth-child(5) {
  grid-column: span 3;
  min-height: 280px;
}

.arch-card-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 48px;
}

.arch-card ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}

.arch-card li {
  position: relative;
  padding-left: 18px;
}

.arch-card li::before {
  content: "";
  position: absolute;
  top: 0.65em;
  left: 0;
  width: 7px;
  height: 2px;
  border-radius: 0;
  background: var(--yellow);
}

/* Data flow */

#dataflow {
  background: var(--soft);
}

.dataflow-wrap {
  max-width: 1120px;
  margin: 0;
  padding: clamp(12px, 2vw, 24px);
  border: 1px solid var(--black);
  border-left: 10px solid var(--yellow);
  background: var(--white);
}

.dataflow-diagram {
  width: 100%;
  height: auto;
  border: 0;
  border-radius: 0;
  background: var(--white);
}

/* Localization */

#localization {
  overflow: hidden;
  background: var(--black);
  color: var(--white);
}

.loc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.78fr);
  gap: clamp(56px, 9vw, 140px);
  align-items: center;
}

#localization .sec-label {
  border-color: var(--white);
  background: var(--black);
  color: var(--white);
}

#localization .sec-divider {
  background: rgba(255, 255, 255, 0.24);
}

.loc-points {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
}

.loc-point {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
}

.loc-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--yellow);
  border-radius: 50%;
  color: var(--yellow);
  font-size: 0.78rem;
  font-weight: 700;
}

.loc-point h4 {
  margin-bottom: 5px;
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
}

.loc-point p {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.84rem;
  line-height: 1.55;
}

.loc-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 520px;
  aspect-ratio: 1;
  padding: clamp(28px, 5vw, 64px);
  border: 0;
  border-radius: 0;
  background: var(--yellow);
  color: var(--black);
  text-align: center;
}

.loc-visual::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(0, 0, 0, 0.45);
}

.loc-visual svg {
  width: clamp(110px, 13vw, 170px);
  height: auto;
  margin-bottom: 28px;
  opacity: 1;
  stroke: var(--black);
}

.loc-visual p {
  position: relative;
  max-width: 310px;
  color: var(--black) !important;
  font-size: 0.85rem !important;
  font-weight: 600;
  line-height: 1.5;
}

/* Software */

#software {
  background: var(--white);
}

.sw-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--black);
  border-left: 1px solid var(--black);
}

.sw-card {
  min-height: 240px;
  border-top: 0;
  border-left: 0;
}

.sw-card h3 {
  display: flex;
  align-items: center;
  gap: 14px;
}

.sw-card h3 > span {
  width: 38px !important;
  height: 38px !important;
}

.sw-card p {
  margin-top: 28px;
}

.software-downloads {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(32px, 6vw, 88px);
  align-items: center;
  scroll-margin-top: calc(var(--nav-h) + 24px);
  margin-top: clamp(36px, 5vw, 64px);
  padding: clamp(28px, 4vw, 52px);
  border-top: 5px solid var(--yellow);
  background: var(--black);
  color: var(--white);
}

.software-downloads-copy h3 {
  margin-bottom: 10px;
  font-size: clamp(1.7rem, 3.2vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.95;
}

.software-downloads-copy p {
  max-width: 420px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.9rem;
  line-height: 1.55;
}

.software-download-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.download-link {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 72px;
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 2px;
  background: var(--black);
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.35;
  text-decoration: none;
  transition:
    background-color var(--transition),
    border-color var(--transition),
    color var(--transition),
    transform var(--transition);
}

.download-link svg {
  flex: 0 0 auto;
}

.download-link:hover {
  border-color: var(--yellow);
  background: var(--yellow);
  color: var(--black);
  text-decoration: none;
  transform: translateY(-3px);
}

/* Hardware */

#hardware {
  background: var(--soft);
}

.hw-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--black);
  border-left: 1px solid var(--black);
}

.hw-card {
  display: grid;
  grid-template-columns: 64px 1fr;
  align-items: start;
  gap: 8px 22px;
  min-height: 190px;
  padding: clamp(24px, 3vw, 34px);
  border-top: 0;
  border-left: 0;
  text-align: left;
}

.hw-icon {
  grid-row: 1 / 3;
  width: 56px;
  height: 56px;
}

.hw-card h4 {
  align-self: end;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.15;
}

.hw-card p {
  grid-column: 2;
}

/* Technology */

#tech-stack {
  background: var(--black);
  color: var(--white);
}

#tech-stack .sec-label {
  border-color: var(--white);
  background: var(--black);
  color: var(--white);
}

#tech-stack .sec-sub {
  color: rgba(255, 255, 255, 0.68);
}

#tech-stack .sec-divider {
  background: rgba(255, 255, 255, 0.24);
}

.stack-groups {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.28);
  border-left: 1px solid rgba(255, 255, 255, 0.28);
}

.stack-groups .card {
  grid-column: span 2;
  min-height: 210px;
  border-color: rgba(255, 255, 255, 0.28);
  border-top: 0;
  border-left: 0;
  background: var(--black);
  color: var(--white);
}

.stack-groups .card:nth-child(4),
.stack-groups .card:nth-child(5) {
  grid-column: span 3;
}

.stack-groups .card:hover {
  background: var(--yellow);
  color: var(--black);
}

.stack-groups .card h3 {
  margin-bottom: 36px;
  color: inherit !important;
  font-size: 1rem;
  font-weight: 700;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 13px;
  border: 1px solid currentColor;
  border-radius: 46px;
  background: transparent;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.76rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 350ms ease calc(var(--i, 0) * 50ms),
    transform 350ms ease calc(var(--i, 0) * 50ms);
}

.badge.visible {
  opacity: 1;
  transform: none;
}

.stack-groups .card:hover .badge {
  color: var(--black);
}

/* Team */

#team {
  background: var(--soft);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: clamp(64px, 8vw, 104px);
  border-top: 1px solid var(--black);
  border-left: 1px solid var(--black);
}

.team-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
  min-height: 390px;
  padding: 0 0 28px;
  border-top: 0;
  border-left: 0;
  text-align: left;
}

.team-card::before {
  z-index: 2;
}

.team-photo {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  object-fit: cover;
  object-position: center 30%;
}

.team-card > div,
.team-card > a {
  margin-inline: 28px;
}

.team-card > a {
  color: var(--muted);
  font-size: 0.74rem;
  overflow-wrap: anywhere;
}

.team-card > a:hover {
  color: inherit;
}

.e-number {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 600;
}

.supervisors-title {
  margin-bottom: 22px;
  color: var(--black);
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  text-align: left;
}

.supervisor-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--black);
  border-left: 1px solid var(--black);
}

.sup-card {
  display: grid;
  grid-template-columns: 48px 1fr;
  align-items: center;
  gap: 16px;
  min-width: 0;
  padding: 24px;
  border-top: 0;
  border-left: 0;
}

.sup-avatar {
  width: 44px;
  height: 44px;
}

.sup-card h4 {
  margin-bottom: 4px;
  font-size: 0.88rem;
  font-weight: 700;
}

.sup-card a {
  color: var(--muted);
  font-size: 0.72rem;
  overflow-wrap: anywhere;
}

/* Footer */

footer {
  position: relative;
  z-index: 1;
  padding: clamp(60px, 7vw, 92px) clamp(20px, 4vw, 64px);
  border-top: 0;
  background: var(--black);
  color: var(--white);
  text-align: left;
}

.footer-brand {
  max-width: 850px;
  margin-bottom: 28px;
  color: var(--white);
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.06em;
  line-height: 0.92;
}

.footer-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  max-width: 850px;
  margin-bottom: 18px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
}

.footer-tags span,
.footer-dept {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.8rem;
}

.footer-tags .sep {
  color: var(--yellow);
}

.footer-dept a {
  color: var(--white);
}

.nav-github {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  margin-top: 8px;
  margin-left: 0;
  padding: 10px 14px;
  border: 1px solid currentColor;
  border-radius: 2px;
  background: transparent;
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-github:hover {
  border-color: var(--yellow);
  background: var(--yellow);
  color: var(--black);
  text-decoration: none;
}

/* Motion */

@keyframes heroReveal {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ringSpin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes flightOrbit {
  from {
    transform: rotate(0deg) translateX(var(--orbit)) rotate(0deg);
  }
  to {
    transform: rotate(360deg) translateX(var(--orbit)) rotate(-360deg);
  }
}

/* Responsive */

@media (max-width: 1180px) {
  .nav-links a {
    padding-inline: 6px;
    font-size: 0.66rem;
  }

  .nav-links a::after {
    right: 6px;
    left: 6px;
  }

  #home .container {
    grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .team-card {
    min-height: 0;
  }
}

@media (max-width: 960px) {
  :root {
    --nav-h: 60px;
  }

  #hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: min(520px, calc(100svh - var(--nav-h) - 12px));
    margin: 0;
    padding: 10px clamp(20px, 4vw, 64px) 16px;
    overflow-y: auto;
    border-top: 1px solid var(--hairline);
    border-bottom: 3px solid var(--yellow);
    background: var(--white);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.12);
  }

  .nav-links.nav-open {
    display: flex;
  }

  .nav-links a {
    min-height: 48px;
    padding: 15px 0;
    border-bottom: 1px solid var(--hairline);
    color: var(--black);
    font-size: 0.92rem;
    line-height: 1.15;
  }

  .nav-links li:last-child a {
    border-bottom: 0;
  }

  .nav-links a::after {
    display: none;
  }

  #home .container {
    grid-template-columns: 1fr;
  }

  .hero-eyebrow {
    grid-column: 1;
    grid-row: 1;
    margin-bottom: 38px;
  }

  .hero-h1 {
    grid-column: 1;
    grid-row: 2;
  }

  .hero-sub {
    grid-column: 1;
    grid-row: 3;
  }

  .hero-ctas {
    grid-column: 1;
    grid-row: 4;
  }

  .hero-ring-wrap {
    grid-column: 1;
    grid-row: 5;
    width: min(100%, 580px);
    margin-top: 56px;
  }

  .hero-stats {
    grid-column: 1;
    grid-row: 6;
    margin-top: 48px;
  }

  .ring-dot {
    --orbit: clamp(105px, 39vw, 238px);
  }

  .solution-grid,
  .loc-grid {
    grid-template-columns: 1fr;
  }

  .software-downloads {
    grid-template-columns: 1fr;
  }

  .arch-grid,
  .stack-groups {
    grid-template-columns: repeat(2, 1fr);
  }

  .arch-card,
  .arch-card:nth-child(4),
  .arch-card:nth-child(5),
  .stack-groups .card,
  .stack-groups .card:nth-child(4),
  .stack-groups .card:nth-child(5) {
    grid-column: span 1;
  }

  .sw-grid,
  .hw-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .loc-visual {
    max-width: 100%;
    aspect-ratio: 16 / 10;
  }

  .supervisor-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container,
  .nav-inner {
    padding-inline: 18px;
  }

  .nav-brand {
    max-width: calc(100% - 56px);
    font-size: 0.88rem;
  }

  .nav-links {
    max-height: calc(100svh - var(--nav-h));
    padding-inline: 18px;
  }

  section {
    padding-block: 64px;
  }

  .sec-title {
    font-size: clamp(2.35rem, 13vw, 4rem);
  }

  .sec-divider {
    margin-block: 34px 30px;
  }

  .hero-eyebrow {
    flex-wrap: wrap;
  }

  .hero-eyebrow span {
    font-size: 0.62rem;
  }

  .hero-h1 {
    font-size: clamp(3.3rem, 18vw, 5.4rem);
  }

  .hero-ctas,
  .hero-ctas .btn {
    width: 100%;
  }

  .software-download-links {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-item:nth-child(3) {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.28);
  }

  .stat-item:nth-child(4) {
    border-top: 1px solid rgba(255, 255, 255, 0.28);
  }

  .motive-grid,
  .sw-grid,
  .hw-grid,
  .team-grid,
  .arch-grid,
  .stack-groups {
    grid-template-columns: 1fr;
  }

  .motive-card {
    grid-template-columns: 48px 1fr;
    min-height: 0;
  }

  .motive-icon {
    width: 48px;
    height: 48px;
  }

  .arch-card {
    min-height: 260px;
  }

  .hw-card {
    min-height: 0;
  }

  .team-card {
    min-height: 0;
  }

  .team-photo {
    aspect-ratio: 1 / 1;
  }

  .loc-visual {
    aspect-ratio: 1;
  }

  .footer-tags .sep {
    display: none;
  }

  .footer-tags {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hero-h1,
  .hero-sub,
  .hero-eyebrow,
  .hero-ring-wrap,
  .hero-stats,
  .hero-ctas,
  .reveal,
  .badge {
    opacity: 1;
    transform: none;
  }
}